DCA-12-230: 230MM FAN DIAMETER FOR FM230M, FM230, FM230-L1, FM230-L2,FM230-L4

DCA-12-250: 250MM FAN DIAMETER FOR FM250E AND FM250

DCA-12-300: 300MM FAN DIAMETER FOR FM300

DCA-12-305: 305MM FAN DIAMETER FOR FM300S

DCA-12-356: 356MM FAN DIAMETER FOR FM350 AND FM470